Will this motor driving even work?
March 26, 2008
fritsl had a blog post about motor driving and h-bridges and it seemed what he basically needed was to "flip the voltage" and get the motor to change its rotation the other way around.
Now I've been thinking a little about it and came up with something that looks like a half-bridge but is really something that in my mind will allow a motor to rotate in both directions and coast. Only problem is that I'm not sure if it will work at all - so I'm asking you guys to either verify that it's a sane design or that it is just way out there before I test it and maybe blow up the house :-).
The idea is that when the upper transistor is on and the lower is off there will be a voltage drop of 3V across the motor in one direction and when the upper transistor is off and the lower is on there will be a voltage drop of 3V across the motor in the other direction. Shouldn't that be all right?